Is it safe to take period delay pills?

In the UK, period delay pills are often prescribed to people who want to push back their periods for travel, weddings, exams, or other moments. 

They’re prescription-only, so you’ll need to get them from your GP or through an online pharmacy after a brief medical review. And while they’re usually safe, doctors do point out possible side effects like bloating, nausea, or headaches. 

Curious about if you should take these pills, and what risks to be aware of? Let’s get into it!

What are period delay pills?

Period delay tablets are hormonal medicines designed to postpone your menstrual cycle. They usually contain synthetic progesterone, which helps keep your uterine lining stable so that bleeding doesn’t begin until you stop the medication. 

Once you stop taking them, your hormone levels drop and your period usually arrives within 2-3 days.

Are period delay pills safe?

In general, these medicines are considered safe for short-term use under medical supervision. However, like all hormonal treatments, they can come with issues such as bloating, nausea, breast tenderness, or changes in mood. 

These are some of the most commonly reported norethisterone side effects, and while they’re usually mild, it’s still important not to self-prescribe (plushcare.com). 

If you have a history of hormonal imbalance, PCOD, or clotting disorders, you may already have issues with late periods. It’s safer to consult your doctor before taking them.

It’s also worth noting that unlike birth control pills, norethisterone won’t prevent pregnancy, its only purpose is to delay your period. You can learn more about the effect of birth control pills on your period here.

Can period delay pills affect fertility?

This is one of the most common concerns. The good news is that period delay pills don’t have a long-term impact on fertility. Once you stop taking them, your cycle should return to its natural rhythm. 

However, your next period might be slightly irregular for a month or two. These pills simply work by adjusting hormone levels temporarily, and once stopped, your period returns to normal.

Can period delay tablets mess up your cycle?

Your menstrual cycle health is influenced by hormones, and introducing synthetic progesterone can temporarily shift your natural balance. For most people, this period delay pill's side effect is reversible. But if your periods were already irregular, you might notice further unpredictability for a short time.

While safe for short-term use, period delay pills should not become a regular solution. Using them often can interfere with your natural cycle, cause irregular bleeding, and even mask underlying conditions like PCOS or thyroid issues. They are designed for occasional situations, not as a long-term period management tool.

Why tracking your periods matters

If you’re considering delaying your period, one of the most useful things you can do is track your cycle. Knowing exactly when your period is due helps you plan better and reduces the anxiety of unexpected bleeding. 

The Asan Period Tracker app can be really helpful with this as it allows you to log your cycle, symptoms and flow, giving you a clear picture of your body’s rhythm. With consistent tracking, you might even find you don’t need pills as often, since you’re already prepared.

Are there natural alternatives to delay your period?

Some people try natural methods like dietary changes or herbal teas, but there’s limited scientific proof that they work. If you’re looking for more sustainable ways to manage your cycle, focusing on lifestyle through balanced nutrition, regular exercise, and reducing stress can help regulate hormones over time. You can read more about how healthy nutrition can help regulate your cycle here.

Frequently Asked Questions

How do period delay pills actually work?

Period delay pills contain synthetic progesterone, which temporarily keeps your uterine lining stable. This prevents bleeding until you stop the medication, after which your period usually starts within a few days. They don’t protect against pregnancy, so use additional contraception if needed.

When will my period return after taking a delay pill?

Most people get their period within 2–3 days after stopping the pills. Some might notice slightly irregular bleeding the next cycle, especially if your periods were already unpredictable. Tracking your cycle with an app like the Asan Period Tracker can help you anticipate and plan for this.

Are delay pills safe for people with PCOD?

If you have PCOD, your hormones and ovulation can already be irregular. Period delay pills can still be used occasionally, but it’s essential to consult a doctor first. They can guide the right timing, dosage, and precautions for your situation.

Can I use a menstrual cup while on delay pills?

Absolutely! Menstrual cups, like all period products, are completely unaffected by hormonal pills. Using a cup can make managing your cycle easier, whether delayed or on schedule. It’s a more sustainable option and can reduce waste compared to pads or tampons. To get more tips on switching to a menstrual cup, read this blog.